An efficient, one-pot synthesis of trithiocarbonates from alcoholic tosylates using the Cs2CO3/CS2 system
摘要:
A single-step novel protocol for the preparation of symmetrical trithiocarbonates from a corresponding variety of primary, secondary, and tertiary alcoholic tosylates using the Cs2CO3/CS2 system, was developed. This protocol is mild and more efficient than the reported methods.
Synthesis, rearrangements, and fragmentation of ketene mercaptals derived from ketones or β-diketones and carbon disulphide
作者:L. Dalgaard、L. Jensen、S.-O. Lawesson
DOI:10.1016/s0040-4020(01)97222-9
日期:1974.1
By use of the ion pair extraction technique, tetrabutylammonium salts of acetylacetone, benzoylacetone, and dibenzoylmethane were reacted with carbon disulphide to give salts of dithioacids. Alkylation gave dithioesters and ketene mercaptals. A simple procedure for the preparation of 2-diacylmethylene-1,3-dithietanes was found. Cyclisation reactions of some acetylacetone derivatives gave a 1,3-dithiolane
[EN] COMPOUNDS, CONJUGATES, AND COMPOSITIONS OF EPIPOLYTHIODIKETOPIPERAZINES AND POLYTHIODIKETOPIPERAZINES AND USES THEREOF<br/>[FR] COMPOSÉS, CONJUGUÉS ET COMPOSITIONS D'ÉPIPOLYTHIODICÉTOPIPÉRAZINES ET DE POLYTHIODICÉTOPIPÉRAZINES ET LEURS UTILISATIONS
申请人:MASSACHUSETTS INST TECHNOLOGY
公开号:WO2020247054A1
公开(公告)日:2020-12-10
The present disclosure provides, e.g., compounds, compositions, kits, methods of synthesis, and methods of use, involving epipolythiodiketopiperazines and polythiodiketopiperazines.
An efficient one-pot approach to the synthesis of symmetric trithiocarbonates from carbon disulfide and alkyl halides using imidazole
作者:Mohammad Soleiman-Beigi、Zahra Taherinia
DOI:10.1080/17415993.2014.919296
日期:2014.9.3
A novel method is reported for the synthesis of symmetricdialkyl and cyclic (5, 6 and 7 member) trithiocarbonates from alkyl halides and carbon disulfide in the presence of imidazole and water in DMSO under mild reaction conditions. Imidazole is used as an inexpensive, non-toxic and readily available catalyst in this procedure. GRAPHICAL ABSTRACT
A convenient one-pot method for the synthesis of symmetrical dialkyl trithiocarbonates using NH<sub>4</sub>
OAc under mild neutral conditions
作者:Zeinab Arzehgar、Hosna Ahmadi
DOI:10.1002/jccs.201800062
日期:2019.3
A facial, new, one‐pot method for the preparation of symmetrical organic trithiocarbonates from various alkyl halides and carbon disulfide is described. This is a convenient, clean, and mild procedure, which involves the use of the neutral, nontoxic, commercially available, and inexpensive reagent NH4OAc in the preparation of the trithiocarbonate ion from carbon disulfide.
Mild and Efficient One-Step Synthesis of Trithiocarbonates Using Minimum Amount of CS<sub>2</sub>
作者:Takeshi Endo、Naoto Aoyagi、Bungo Ochiai、Hideharu Mori
DOI:10.1055/s-2006-932480
日期:——
Symmetricaldialkyltrithiocarbonates were obtained from various alkyl halides with an equivalent of carbon disulfide and cesium carbonate in polar aprotic solvents, although the conventional synthesis of trithiocarbonates had required large excess amount of carbon disulfide. This reaction proceeds under ambient conditions, for example, at room temperature under an aerial atmosphere, without strong